The Filter,fluid, cataloged under National Stock Number 4330-01-331-2946, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Pall Aeropower Corporation. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-331-2946 |
| Primary Part Number | AH-9999-A12UPRLP |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Filtration Rating in Microns | 45.0 NOMINAL |
| Design Type | LIMITED |
| Body Outside Diameter | 4.110 INCHES NOMINAL IN |
| Body Height | 7.480 INCHES NOMINAL IN |
| Style Designator | UNTHREADED SHELL |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Material | ALUMINUM ALLOY BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AH-9999-A12UPRLP | Pall Aeropower Corporation (USA) |
| 5520514 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| AH-9999-A12UPRLP | 3/9 Design control — primary reference Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
| 4330PL0956417 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4330-01-331-2946 is a Filter,fluid, manufactured by Pall Aeropower Corporation, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-331-2946 has 2 manufacturer part numbers on file: AH-9999-A12UPRLP (Pall Aeropower Corporation), 5520514 (Naval Sea Systems Command).
Key specifications for AH-9999-A12UPRLP: Filtration Rating in Microns: 45.0 NOMINAL; Design Type: LIMITED; Body Outside Diameter: 4.110 INCHES NOMINAL IN; Body Height: 7.480 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.